Cover plate



FIG. 1 is a perspective view of the cover plate showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a side view thereof, the opposite side being a mirror image thereof; and,

FIG. 4 is a top view thereof, the opposite side being a mirror image thereof. 

I claim the ornamental design for the cover plate, as shown and described. 